安徽电子信息职业技术学院学报

数控机床常见的电气系统故障涉及机床电气控制电路、数控系统参数设定及PMC程序三个方面。为了快速确定故障点并采取合理的方法排除机床故障，以FANUC系统数控机床为研究对象，基于故障发生的机理和维修实践经验，从机床电气控制电路、常见系统报警和PMC程序三个方面研究了故障排除方法。通过分析，依据故障类型采用相应的故障排除方法，有利于提高数控机床维修效率。

The common electrical system faults of CNC machine tools involve three aspects: machine tool electrical control circuit, CNC system parameter setting and PMC program. In order to quickly identify the fault point and adopt reasonable methods to eliminate machine tool faults, FANUC CNC machine tools were taken as the research object. Based on the mechanism of fault occurrence and maintenance practice experience, fault elimination methods were studied from three aspects: machine tool electrical control circuit, common system alarms, and PMC program. By analyzing and adopting corresponding troubleshooting methods based on the type of fault, it is beneficial to improve the maintenance efficiency of CNC machine tools.